Wind power transmission chain oil tank structure and working method thereof

Abstract

The invention discloses a wind power transmission chain oil tank structure and a working method thereof.The wind power transmission chain comprises a bearing seat and a gearbox, a first oil tank part used for collecting lubricating oil in the bearing seat is arranged at the bottom of an inner cavity of the bearing seat, and a second oil tank part used for collecting lubricating oil in the gearbox is arranged at the bottom of an inner cavity of the gearbox; the first oil tank communicates with the second oil tank. According to the gearbox, the second oil tank part is arranged in the gearbox, lubricating oil in the gearbox is collected and stored through the second oil tank part, and therefore the oil storage space of the gearbox is directly increased; the first oil tank part is arranged in the bearing seat, lubricating oil in the bearing seat is collected and stored through the first oil tank part, the first oil tank part is communicated with the gear box, so that the lubricating oil stored in the first oil tank part can flow into the gear box, and the oil storage space of the gear box is indirectly increased; therefore, the oil tank structure of the wind power transmission chain can enlarge the oil storage space of the gear box on the basis of not using an additional external oil tank.

Description

Technical Field

[0001] The invention belongs to the technical field of wind power transmission chains, and in particular relates to a wind power transmission chain oil tank structure and a working method thereof. Background Art

[0002] With the development of the wind power industry, the capacity of wind turbines is getting larger and larger, and the amount of lubricating oil required for the transmission chain is increasing. Especially for wind turbines that also use oil lubrication for the main shaft bearings, the power density of the transmission chain is getting larger and larger, and the oil storage volume inside the gearbox is getting smaller and smaller. The original gearbox has obviously insufficient internal oil storage space.

[0003] In order to solve the problem of insufficient oil storage space, the prior art generally provides an oil tank outside the gearbox, such as the wind turbine gearbox lubrication system with publication number CN101979872A. However, the external oil tank occupies a large space in the cabin and the connecting pipelines are relatively complicated. Summary of the invention

[0004] In order to overcome the defects of the prior art, the present invention provides a wind power transmission chain oil tank structure and a working method thereof, which can increase the oil storage space of the gear box without using an additional external oil tank.

[0005] The object of the present invention is achieved through the following technical solutions:

[0006] In a first aspect, a wind power transmission chain oil tank structure is provided, wherein the wind power transmission chain comprises a bearing seat and a gear box, wherein a first oil tank portion for collecting lubricating oil in the bearing seat is provided at the bottom of the inner cavity of the bearing seat, and the first oil tank portion is connected to the bottom of the inner cavity of the gear box; and / or

[0007] A second oil tank portion for collecting lubricating oil in the gear box is arranged at the bottom of the inner cavity of the gear box, and the second oil tank portion is connected to the bottom of the inner cavity of the bearing seat.

[0008] The beneficial effects of adopting the above technical solution are as follows: a second oil tank portion is provided in the gearbox to collect and store the lubricating oil in the gearbox through the second oil tank portion, thereby directly increasing the oil storage space of the gearbox; a first oil tank portion is provided in the bearing seat to collect and store the lubricating oil in the bearing seat through the first oil tank portion, and since the first oil tank portion is connected to the gearbox, the lubricating oil stored in the first oil tank portion can flow into the gearbox, which indirectly increases the oil storage space of the gearbox; in addition, the first oil tank portion and the second oil tank portion are respectively inside the bearing seat and the gearbox, that is, the wind power transmission chain oil tank structure can increase the oil storage space of the gearbox without using an additional external oil tank.

[0009] In one embodiment, a bearing is installed in the bearing seat, a gear is installed in the gear box, and the wind power transmission chain includes an oil pump for pumping lubricating oil at the bottom of the gear box cavity to the bearing and the gear;

[0010] When the oil pump pumps out the lubricating oil at the bottom of the gearbox inner cavity, the lubricating oil level at the bottom of the gearbox inner cavity drops, and the lubricating oil at the bottom of the bearing seat inner cavity is automatically replenished into the bottom of the gearbox inner cavity.

[0011] The beneficial effects of adopting the above technical solution are as follows: the oil pump can pump the lubricating oil at the bottom of the gear box inner cavity to the bearings and gears to lubricate the bearings and gears; during this process, the lubricating oil level at the bottom of the gear box inner cavity drops, and the lubricating oil output by the oil pump takes a certain amount of time to flow to the bottom of the gear box inner cavity after lubricating the gears. At this time, the lubricating oil at the bottom of the bearing seat inner cavity can be replenished into the bottom of the gear box inner cavity by itself, thereby ensuring that the oil pump will not be sucked empty before the pumped lubricating oil flows back to the bottom of the gear box inner cavity.

[0012] In one embodiment, the wind power transmission chain oil tank structure includes a fluid transmission channel for connecting the bottom of the gear box inner cavity and the bottom of the bearing seat inner cavity, and the top of the fluid transmission channel is lower than the initial liquid level of the lubricating oil in the bearing seat and the gear box.

[0013] The beneficial effect of adopting the above technical solution is: it is arranged in this way so that part of the lubricating oil at the bottom of the inner cavity of the bearing seat can be gradually replenished into the bottom of the inner cavity of the gear box through the fluid transmission channel as the lubricating oil level at the bottom of the inner cavity of the gear box drops.

[0014] In one embodiment, the connection point between the oil pump and the inner cavity of the gear box is lower than the top end of the fluid transmission channel.

[0015] The beneficial effect of adopting the above technical solution is: when the oil pump is arranged to pump out the lubricating oil at the bottom of the gearbox inner cavity, part of the lubricating oil at the bottom of the bearing seat inner cavity can be replenished into the bottom of the gearbox inner cavity through the fluid transmission channel.

[0016] In one embodiment, the input end of the oil pump is connected to the bottom of the inner cavity of the gear box.

[0017] The beneficial effect of adopting the above technical solution is: it is configured in this way so that the oil pump can pump out the lubricating oil originally stored in the bottom of the gear box inner cavity and the lubricating oil added to the bottom of the gear box inner cavity from the bottom of the bearing seat inner cavity, thereby increasing the amount that the oil pump can pump out, and then ensuring that the oil pump will not be sucked empty before the pumped lubricating oil flows back to the bottom of the gear box inner cavity.

[0018] In one embodiment, the fluid transmission channel is a pipe or a flow channel cast together with the gear box and the bearing seat.

[0019] In one embodiment, the output end of the oil pump is directed toward the bearings and the gears.

[0020] The beneficial effect of adopting the above technical solution is: the oil pump is arranged in this way so that it can pump lubricating oil to the bearings and gears, thereby lubricating the bearings and gears.

[0021] In one embodiment, the oil pump is fixedly connected to the bearing seat or the gear box.

[0022] In one embodiment, the first oil tank portion is a first groove arranged at the bottom of the inner cavity of the bearing seat; the second oil tank portion is a second groove arranged at the bottom of the inner cavity of the gear box.

[0023] In a second aspect, a working method of a wind power transmission chain oil tank structure is provided, which comprises the following steps:

[0024] Lubricating oil is filled into the bottom of the inner cavity of the bearing seat and the bottom of the inner cavity of the gear box, so that when the lubricating oil level at the bottom of the inner cavity of the gear box drops, the lubricating oil at the bottom of the inner cavity of the bearing seat can be automatically replenished into the bottom of the inner cavity of the gear box;

[0025] The lubricating oil at the bottom of the gearbox inner cavity is pumped to the bearings and gears to lubricate the bearings and gears; at the same time, the lubricating oil at the bottom of the bearing seat inner cavity is automatically replenished into the bottom of the gearbox inner cavity.

[0026] The beneficial effects of the present invention are:

[0027] 1. The gearbox is provided with a second oil tank part to collect and store the lubricating oil in the gearbox through the second oil tank part, thereby directly increasing the oil storage space of the gearbox; the bearing seat is provided with a first oil tank part to collect and store the lubricating oil in the bearing seat through the first oil tank part, and since the first oil tank part is connected to the gearbox, the lubricating oil stored in the first oil tank part can flow into the gearbox, which indirectly increases the oil storage space of the gearbox; in addition, the first oil tank part and the second oil tank part are respectively inside the bearing seat and the gearbox, that is, the wind power transmission chain oil tank structure can increase the oil storage space of the gearbox without using an additional external oil tank;

[0028] 2. The oil pump can pump the lubricating oil at the bottom of the gearbox inner cavity to the bearings and gears to lubricate the bearings and gears; during this process, the lubricating oil level at the bottom of the gearbox inner cavity drops, and the lubricating oil output by the oil pump takes a certain amount of time to flow to the bottom of the gearbox inner cavity after lubricating the gears. At this time, the lubricating oil at the bottom of the bearing seat inner cavity can be replenished into the bottom of the gearbox inner cavity by itself, thereby ensuring that the oil pump will not be sucked empty before the pumped lubricating oil flows back to the bottom of the gearbox inner cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0030] Figure 1A schematic diagram showing the structure of an embodiment of the present invention is shown;

[0031] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0032] Reference numerals:

[0033] 1-bearing seat, 2-gear box, 3-oil pump, 4-first oil tank part, 5-fluid transmission channel, 6-second oil tank part. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings.

[0035] Example 1

[0036] The present invention provides a wind power transmission chain oil tank structure, such as Figure 1 As shown, the wind power transmission chain includes a bearing seat 1 and a gear box 2. A first oil tank portion 4 for collecting the lubricating oil in the bearing seat 1 is arranged at the bottom of the inner cavity of the bearing seat 1, and a second oil tank portion 6 for collecting the lubricating oil in the gear box 2 is arranged at the bottom of the inner cavity of the gear box 2. The first oil tank portion 4 is connected to the second oil tank portion 6; wherein the first oil tank portion 4 is a first groove arranged at the bottom of the inner cavity of the bearing seat 1, and the second oil tank portion 6 is a second groove arranged at the bottom of the inner cavity of the gear box 2.

[0037] It can be understood that the gearbox 2 is provided with a second oil tank portion 6 to collect and store the lubricating oil in the gearbox 2 through the second oil tank portion 6, thereby directly increasing the oil storage space of the gearbox 2; the bearing seat 1 is provided with a first oil tank portion 4 to collect and store the lubricating oil in the bearing seat 1 through the first oil tank portion 4, and since the first oil tank portion 4 is connected to the second oil tank portion 6, the lubricating oil stored in the first oil tank portion 4 can flow into the gearbox 2, which indirectly increases the oil storage space of the gearbox 2; in addition, the first oil tank portion 4 and the second oil tank portion 6 are respectively inside the bearing seat 1 and the gearbox 2, that is, the wind power transmission chain oil tank structure can increase the oil storage space of the gearbox 2 without using an additional external oil tank.

[0038] It should be noted that the first groove and the second groove can be cast together when the bearing seat 1 and the gear box 2 are cast.

[0039] Furthermore, bearings are installed in the bearing seat 1, gears are installed in the gear box 2, and the wind power transmission chain includes an oil pump 3 for pumping the lubricating oil in the second oil tank part 6 to the bearings and gears. The oil pump 3 is fixedly connected to the outside of the bearing seat 1 or the gear box 2; wherein, when the oil pump 3 pumps out the lubricating oil in the second oil tank part 6, the lubricating oil level in the second oil tank part 6 drops, and the lubricating oil in the first oil tank part 4 is automatically replenished into the bottom of the inner cavity of the gear box 2.

[0040] It can be understood that the oil pump 3 can pump the lubricating oil in the second oil tank section 6 to the bearings and gears to lubricate the bearings and gears; during this process, the lubricating oil level in the second oil tank section 6 drops, and the lubricating oil output by the oil pump 3 takes a certain amount of time to flow to the second oil tank section 6 after lubricating the gears. At this time, the lubricating oil in the first oil tank section 4 can be replenished into the second oil tank section 6 by itself, thereby ensuring that the oil pump 3 will not be sucked empty before the pumped lubricating oil flows back to the second oil tank section 6.

[0041] Furthermore, the wind power transmission chain oil tank structure includes a fluid transmission channel 5 for connecting the second oil tank part 6 and the first oil tank part 4, and because the top of the fluid transmission channel 5 is not lower than the initial liquid level of the lubricating oil in the first oil tank part 4 and the second oil tank part 6, the lubricating oil in the first oil tank part 4 cannot enter the second oil tank part 6 through the fluid transmission channel 5. Therefore, in this embodiment, the top of the fluid transmission channel 5 is lower than the initial liquid level of the lubricating oil in the first oil tank part 4 and the second oil tank part 6; this arrangement allows part of the lubricating oil in the first oil tank part 4 to be gradually replenished into the second oil tank part 6 through the fluid transmission channel 5 as the lubricating oil level in the second oil tank part 6 decreases.

[0042] On this basis, if the connection between the oil pump 3 and the second oil tank portion 6 is not lower than the top of the fluid transmission channel 5, the connection between the oil pump 3 and the second oil tank portion 6 is higher than the lubricating oil level in the second oil tank portion 6; therefore, in this embodiment, the connection between the oil pump 3 and the inner cavity of the gear box 2 is lower than the top of the fluid transmission channel 5, so that when the oil pump 3 pumps out the lubricating oil of the second oil tank portion 6, part of the lubricating oil of the first oil tank portion 4 can be replenished into the second oil tank portion 6 through the fluid transmission channel 5.

[0043] Specifically, the input end of the oil pump 3 is connected to the bottom of the tank of the second oil tank portion 6, so that the oil pump 3 can pump out the lubricating oil originally stored in the second oil tank portion 6 and the lubricating oil replenished into the second oil tank portion 6 from the first oil tank portion 4, thereby increasing the amount that the oil pump 3 can pump out, and further ensuring that the oil pump 3 will not be sucked empty before the pumped lubricating oil flows back to the second oil tank portion 6.

[0044] In addition, the output end of the oil pump 3 faces the bearings and gears, so that the oil pump 3 can pump lubricating oil to the bearings and gears, thereby lubricating the bearings and gears.

[0045] Optionally, the fluid transmission channel 5 may be a pipe or a flow channel cast together with the gear box 2 and the bearing seat 1; when the fluid transmission channel 5 adopts a flow channel cast together with the gear box 2 and the bearing seat 1, the connecting pipelines outside the bearing seat 1 and the gear box 2 can be reduced, thereby reducing the complexity of the connecting pipelines outside the bearing seat 1 and the gear box 2; specifically, the flow channel is located between the side wall of the first groove and the side wall of the second groove.

[0046] Example 2

[0047] Different from Example 1, in this embodiment, a second oil tank portion 6 for collecting the lubricating oil in the gear box 2 is no longer provided at the bottom of the inner cavity of the gear box 2, but only a first oil tank portion 4 for collecting the lubricating oil in the bearing seat 1 is provided at the bottom of the inner cavity of the bearing seat 1, and the first oil tank portion 4 is connected to the bottom of the inner cavity of the gear box 2.

[0048] It can be understood that the bearing seat 1 is provided with a first oil tank portion 4 to collect and store the lubricating oil in the bearing seat 1 through the first oil tank portion 4, and since the first oil tank portion 4 is connected to the gear box 2, the lubricating oil stored in the first oil tank portion 4 can flow into the gear box 2, which indirectly increases the oil storage space of the gear box 2, and since the first oil tank portion 4 is inside the bearing seat 1, the wind power transmission chain oil tank structure can indirectly increase the oil storage space of the gear box 2 without using an additional external oil tank.

[0049] Example 3

[0050] Different from Example 1, in this embodiment, the first oil tank part 4 for collecting the lubricating oil in the bearing seat 1 is no longer provided at the bottom of the inner cavity of the bearing seat 1, but only the second oil tank part 6 for collecting the lubricating oil in the gear box 2 is provided at the bottom of the inner cavity of the gear box 2.

[0051] It can be understood that the gearbox 2 is provided with a second oil tank portion 6 to collect and store the lubricating oil in the gearbox 2 through the second oil tank portion 6, thereby directly increasing the oil storage space of the gearbox 2, and since the second oil tank portion 6 is inside the gearbox 2, the wind power transmission chain oil tank structure can directly increase the oil storage space of the gearbox 2 without using an additional external oil tank.

[0052] Example 4

[0053] This embodiment is the working method of embodiment 1, which specifically comprises the following steps:

[0054] When the first oil tank section 4 and the second oil tank section 6 are both filled with lubricating oil so that the lubricating oil level of the second oil tank section 6 drops, the first oil tank section 4 can replenish the second oil tank section 6 by itself through the fluid transmission channel 5;

[0055] The oil pump 3 is used to pump the lubricating oil in the second oil tank section 6 to the bearings and gears to lubricate the bearings and gears; at the same time, the first oil tank section 4 replenishes itself into the second oil tank section 6 to ensure that the oil pump will not be emptied before the pumped lubricating oil flows back to the second oil tank section 6.

[0056] In summary, the present invention can not only increase the oil storage space of the gearbox 2 without using an additional external oil tank, but also ensure that the oil pump 3 will not be sucked empty before the pumped lubricating oil flows back to the bottom of the inner cavity of the gearbox 2, thereby ensuring normal lubrication in the wind power transmission chain.

[0057] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0058] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A wind power transmission chain oil tank structure, the wind power transmission chain comprising a bearing seat (1) and a gear box (2), characterized in that: The bottom of the inner cavity of the bearing seat (1) is provided with a first oil tank portion (4) for collecting lubricating oil in the bearing seat (1), and the first oil tank portion (4) is connected to the bottom of the inner cavity of the gear box (2); and / or The bottom of the inner cavity of the gear box (2) is provided with a second oil tank portion (6) for collecting lubricating oil in the gear box (2), and the second oil tank portion (6) is connected to the bottom of the inner cavity of the bearing seat (1).

2. A wind power transmission chain oil tank structure according to claim 1, characterized in that: A bearing is installed in the bearing seat (1), a gear is installed in the gear box (2), and the wind power transmission chain comprises an oil pump (3) for pumping lubricating oil at the bottom of the inner cavity of the gear box (2) to the bearing and the gear; When the oil pump (3) pumps out the lubricating oil at the bottom of the inner cavity of the gear box (2), the lubricating oil level at the bottom of the inner cavity of the gear box (2) drops, and the lubricating oil at the bottom of the inner cavity of the bearing seat (1) automatically replenishes into the bottom of the inner cavity of the gear box (2).

3. A wind power transmission chain oil tank structure according to claim 2, characterized in that: It comprises a fluid transmission channel (5) for connecting the bottom of the inner cavity of the gear box (2) and the bottom of the inner cavity of the bearing seat (1), and the top of the fluid transmission channel (5) is lower than the initial liquid level of the lubricating oil in the bearing seat (1) and the gear box (2).

4. A wind power transmission chain oil tank structure according to claim 3, characterized in that: The connection point between the oil pump (3) and the inner cavity of the gear box (2) is lower than the top end of the fluid transmission channel (5).

5. A wind power transmission chain oil tank structure according to claim 4, characterized in that: The input end of the oil pump (3) is connected to the bottom of the inner cavity of the gear box (2).

6. The oil tank structure of a wind power transmission chain according to claim 3, characterized in that: The fluid transmission channel (5) is a pipe or a flow channel cast together with the gear box (2) and the bearing seat (1).

7. A wind power transmission chain oil tank structure according to claim 2, characterized in that: The output end of the oil pump (3) faces the bearing and the gear.

8. The oil tank structure of a wind power transmission chain according to claim 2, characterized in that: The oil pump (3) is fixedly connected to the bearing seat (1) or the gear box (2).

9. The oil tank structure of a wind power transmission chain according to claim 1, characterized in that: The first oil tank portion (4) is a first groove arranged at the bottom of the inner cavity of the bearing seat (1); and the second oil tank portion (6) is a second groove arranged at the bottom of the inner cavity of the gear box (2).

10. A working method of the oil tank structure of a wind power transmission chain according to any one of claims 1 to 9, characterized in that: The following steps are involved: Lubricating oil is filled into the bottom of the inner cavity of the bearing seat (1) and the bottom of the inner cavity of the gear box (2), so that when the lubricating oil level at the bottom of the inner cavity of the gear box (2) drops, the lubricating oil at the bottom of the inner cavity of the bearing seat (1) can be automatically replenished into the bottom of the inner cavity of the gear box (2); The lubricating oil at the bottom of the inner cavity of the gear box (2) is pumped to the bearings and gears to lubricate the bearings and gears; at the same time, the lubricating oil at the bottom of the inner cavity of the bearing seat (1) is automatically replenished into the bottom of the inner cavity of the gear box (2).

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